Yaskawa Σ-V Series AC Servo Drives Rotational Motor Analog Voltage Reference - Manual (Page 90)

5 Operation
5.2.4 Holding Brakes
5-10
(1) Wiring Example
Use the brake signal (/BK) and the brake power supply to form a brake ON/OFF circuit. The following dia-
gram shows a standard wiring example.
The timing can be easily set using the brake signal (/BK).
• Always connect a surge absorber.
Recommended surge absorber: Z15D151 (manufactured by SEMITEC Corporation)
• After the surge absorber is connected, check the total time the brake is applied for the
system. Depending on the surge absorber, the total time the brake is applied can be
changed.
• Configure the relay circuit to apply the holding brake by the emergency stop.
• The brake signal (/BK) cannot be used with factory settings. The output signal must
be allocated. Refer to (3) Brake Signal (/BK) Allocation to set the parameter Pn50F.
• Always separate the 24-VDC power supply for the 24-V brake from other power sup-
plies, such as the control or I/O signal (CN1) power supplies. If the power supply is
shared, the I/O signals might malfunction.
BK-RY: Brake control relay
Brake power supply for 24 VDC is not included.
M
BK
ENC
U
V
W
11
CN2
BK-RY
BK-RY
+24V
L1
L2
C1
C2
/BK
COM_SG
CN1
CN3 CN4
1D
0 V
Servomotor
with holding
brake
Surge
absorber
SERVOPACK
Power supply
Non-isolated
AC/DC converter
for main power supply
Non-isolated
AC/DC converter
for control
power supply
Brake power
supply
Analog
Relay Circuit Example
0 V
Emergency stop
5 to 24 VDC
SERVOPACK
Photocoupler